Trolley.



No. 665,369. Patented Ian. I, l90l.

H. LACHENMEYEB.

TROLLEY.

(Application fllad Feb. 20, 1900.)

(No Model.)

UNITED STATES PATENT OFFICE.

HERMANN LACHENMEYER, OF DUSSELDORF, GERMANY, ASSIGNOR TO COM-MANDITGESELLSOHAFT SPIEGEL, NAOKEN & 00., OF COLOGNE, GERMANY.

TROLLEY.

SPECIFICATION forming part of Letters Patent No. 665,369, dated January1, 1901.

Application filed February 20, 1900. Serial No. 53883. (No model.)

T at whom it may concern.-

Be it known that I, HERMANN LAGHEN= MEYER, a subject of the King ofPrussia, German Emperor, residing at 64 Rosenstrasse,

Dusseldorf, in the Kingdom of Prussia and Empire of Germany, haveinvented certain new and useful Improvements in Curren t-Receivers forElectric Railways, of which the following is a full, clear, and exactdescrip- IO tion.

The object of the present invention is an improvement incurrent-receivers for electric railways with overhead power whichprevents the slipping of the trolley-wheel from the conductor under anycircumstances.

The contrivance is essentially characterized by two parts inclosing thetrolley-Wheel constructed as a revolving cross provided with arms, whicharms revolve by striking against the transverse wires which serve togive its tension to the electric conductor when the trolley movesforward along the conductor, and thereby prevent the slipping of thetrolley from the conductor under any circumstances. The arms of theaforesaid parts inclosing the trolley-wheel extend some distance beyondits periphery, and the length is so regulated that as they revolve onepair of the arms of the cross always incloses the con- 0 ductor whichlies upon the trolley-wheel, so that the latter cannot slip in anyposition.

In the accompanying drawings, Figures 1 and 2 show the improvement inpartially-longitudinal section and as a side elevation.

Figs. 3 and 4: illustrate in section and elevation a variation of thecontrivance shown in Fig. 1.

On the bolt 0 of the forked rod 9 is placed the trolley-wheel a, theposition of which. is

fixed by the pin which fits into a groove 1 of the bolt 0. On both sidesthe trolley-wheel is inclosed by the parts I), the arms of which projectbeyond the periphery of the trolley- Wheel a. The arms are arrangedcrosswise,

so that thus each part has the form of a revolving cross. These partsare keyed to the axle and revolve with it, while the trolleywheelnaturally revolves independently on the axle. When the arms 12 standingvertically at the top strike against the transverse 56 wires to whichthe conductor is attached, the parts b revolve through ninety degrees.The consequence of this is that the conductor is always inclosed by thearms, and therefore slipping of the trolley-wheel is rendered im-'possible under any circumstances.

Regard must be paid to the fact that the conductor can never lie on theedges of the hollow grooved trolley-Wheel a, as the arms 1) project overthese edges, as shown in Fig. 60 l. The position of the conductorin thegroove a is therefore by this means always established. In order toinsure the position of the parts I) in such a way that the arms mayalways be vertical or horizontal, a toothed wheel .2 with four teeth isprovided at one end of. the bolt 0, with which toothed wheel aspring-pawl y engages. The contrivanoe can also be so arranged that theparts I) do not act as a revolving cross, but always regain theiroriginal position after the revolution caused by striking against thetransverse wires. This can best be attained, as shown in Figs. 3 and 4,by making two of the arms into counterpoises b This latter contrivancehas the advantage of simplicity, and, moreover, the bolt 0 has not torevolve continuously, and thus possibly effect the working of thetrolley-wheel.

What I claim, and desire to secure by Let- 8o ters Patent, is

1. In current-receivers for electric railways the combination of atrolley-wheel a, cruciform guards b, b, on each side of the trolleywheelthe revoluble bolt 0 on which the guards b b are keyed and on which thetrolley-wheel runs freely and the bifurcated trolley-pole g in which thebolt 0 is mounted, as shown and described.

2. The combination of the trolley-wheel a, 0 the guards b 6 formed withprojecting arms b and recessed faces to inclose the flanges of thewheel, the revoluble bolt 0 on which the guards b are keyed, and thebifurcated trolley-pole g in which the bolt 0 is mounted as 5 shown anddescribed.

3. The combination of the trolley-wheel a, cruciform guards I) havingprojecting arms 1), bolt 0 on Which the trolley-Wheel runs and on whichthe guards Z) are keyed, the starwheel z keyed on the revolnble bolt 0and having teeth corresponding in number with the arms I) and thedetent-pawl y engaging with the star-Wheel z and maintaining thesuccessive arms I) of the guards in vertical position as explained. 10

In Witness whereof I subscribe my signature in presence of twoWitnesses.

HERMANN LAOHENMEYER. Witnesses:

FRANK E. MALLETT, KARL SOHMITT.

